PROFIS ENGINEERING
Figure 4.3( c). plan view
Figure 4.3( c). elevation view
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Reference [ 17 ]. Case 1 / Case 2 calculations for nominal shear concrete breakout strength( V cbg, row n) will be predicated on the anchor geometry for concrete breakout in shear corresponding to row 1 and row 3( A vc, row n) and the distance of each row from the y- edge( c a1, row n).
• row 1: V cbg, row1 = A vc, row1 A vc0 ψ ec, V ψ ed, V ψ c, V ψ h, V ψ parallel, V V b
A Vc, row 1 =( 1.5c a1, row 1 + s x12 + s x23 + 1.5c a1, row 1) * MIN { 1.5c a1, row 1; h concrete } Assume 1.5c a1, row 1 controls for projected distance down from surface.
• row 3: V cbg, row3 = A vc, row 3 ψ
A ec, V ψ ed, V ψ c, V ψ h, V ψ parallel, V V b vc0 A Vc, row 3 =( 1.5c a1, row 3 + s x12 + s x23 + 1.5c a1, row 3) * MIN { 1.5c a1, row 3; h concrete } Assume h concrete controls for projected distance down from surface.
• Check the design concrete breakout strength for each row( ϕV cbg, row n) versus the factored load acting on each row( V ua, row n).
• row 1: design is satisfied if( V ua, row 1 / ϕV cbg, row 1) ≤ 1.0
• row 3: design is satisfied if( V ua, row 3 / ϕV cbg, row 3) ≤ 1.0
• Case 1 / Case 2 utilization for row 1 =( V ua, row 1 / ϕV cbg, row 1).
• V ua, row 1 = 0.5V ua
• Case 1 / Case 2 utilization for row 3 =( V ua, row 3 / ϕV cbg, row 3).
• V ua, row 3 = 1.0V ua for row 3
• MAX {( 0.5V ua / ϕV cbg, row 1);( 1.0V ua / ϕV cbg, row 3)} controls for concrete breakout in shear.
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